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The long chain alkyl benzenes in six samples show an even carbon number predominance ranging from C16 to C20 in carbon number. 样品中长链烷基苯在C16-C20?围内具有较明显的偶碳优势。
The distribution characteristics of long chain alkyl benzene in different state hydrocarbon can be used for petroleum accumulation dating. 长链烷基苯在不同赋存状态烃的分布特徵，可以应用于油气聚集时间和成藏差异的研究。
The finding of long chain alkyl benzene proves the relatively strong reducing environments during deposition at that time. 长链烷基苯的检出进一步验证了当时沉积物处于较强还原环境。
long chain alkyl benzenes 不同赋存状态烃
The long chain alkyl methacrylate was synthesized by an im proved melt esterification method. 用改进的熔融酯化法制备了甲基丙烯酸十六酯。
Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced . 介绍了降凝剂中间体丙烯酸高碳醇酯的合成和产品分离提纯方法。
New quaternary ammonium salt cationic surfactants with 3 long chain alkyl groups were preparad from 4-alkyldiethylenetriamine and fatty acids through amidation and quaternization. 以个长链烷基二亚乙基三胺和脂肪酸为原料，经酰胺化、季铵化合成了6种未见文献报道的三长链烷基季铵盐型阳离子表面活性剂。
The epoxy resin/methyl-nadic anhydride (MNA)/organophilic montmorillonite (OMMT) composite was prepared, in which the OMMT was modified by long chain alkyl quaternary ammonium salts. 摘要采用长链烷基季胺盐对蒙脱土进行有机改性，将改性后的蒙脱土与双酚A型环氧树脂以及酸酐固化剂充分混合固化制得复合材料。
By substituting one carboxymethyl group in the molecule of EDTA with a long chain alkyl,a polyfunctional surfactant having both surfactivity and ability of chelating metal ions was obtained. 以长链烷基替代EDTA分子中的一个乙酸基,使其改性为既具表面活性又有络合金属离子能力的多功能表面活性剂。
This paper reviews their development since 1980's, involving the cellulose based polymer surfactants containing long chain alkyl hydrophobe, fluorocarbon hydrophobe and amphipathic chain segment. 本文综述了近20年来其主要研究进展，内容涉及含长链烷基、含碳氟基团和含双亲链段3类纤维素类表面活性剂。
unsaturated long chain alkyl ammonium salts 不饱和长链烷基季铵盐
Thought these pilot studies, the design of zao compound with surfactivity can work by combining the long chain alkyls and Acid Blue Black 10B together. 通过初步的研究表明，把长链烷基和酸性蓝黑10B结合起来，使酸性蓝黑10B具有表面活性这个设计是可行的。
Keywords long chain alkyl methacrylate;sopper;melt esterification; 甲基丙烯酸高级酯;吸水剂;熔融酯化法;
Keywords long chain alkyl phophate monoester;deinking agent;collector; 烷基磷酸单酯;脱墨剂;捕集剂;
The correlation of F' and the standard enthalpies of formation for a series of alkyl benzenes was examined. 用F'研究一些烷基苯的标准生成焓，得到了令人满意的结果。
Preparation and Properties of the Copolymer of Acrylamide and Long Chain Alkyl Quaternary Ammonium Salt 丙烯酰胺与长链季铵盐共聚树脂的制备与性能
Emergent shutdown of the recycle gas compressor is a very typical accident of non-plan shutdown happened in alkyl benzenes combination plant. 循环气体压缩机的紧急停车,是烷基苯联合装置非计划停车中的一个比较典型的事故案例。
GAS CROMATOGRAPHIC DETERMINATION OF LONG CHAIN ALKYL ACRYLATE WITH WIDE BORE FLEXIBLE FUSED SILICA CAPILLARY COLUMN 宽孔弹性石英毛细管柱气相色谱分析高烷基丙烯酸酯
Keywords Long chain alkyl crown ether;Phase transfer catalyst;Metalloporphyrin;Epoxidation.; 长链烷基冠醚;相转移催化剂;金属卟啉;环氧化反应;
Keywords long chain alkyl dimethyl tertiary amine;dimethylamine;copper-based catalyst;fixed-bed catalytic reator;dispropotionation;activity; 长链烷基叔胺;二甲胺;铜基催化剂;固定床;歧化;活性;